Means for lubricating the cylinder liners of internal-combustion engines



'July 14, 1925.

D. KEMP BANS FOR LUBRICATI NG THE CYLINDER LINERS INTERNAL COMBUSTION ENGINES Filed Sept. 24. 1924 Hume g Patented July '14, 1925.

STATES PATENT OFFICE;-

nAN-IE KEMP, or HEBBUBN -TYNE, ENGLAND, ASSIGNOR; 'rornLME-ns smar- BUILDING AND moN CQMZPANY','LIMITED, or- HEB RNm -TYNE; ENGLAND.

MEANS FOR LUBRIGAflTING THE; GYLINDERiLINERSe 0E INTERNAL-OOMBT-ISTIONJ EN:-

. G-INESQ Application. filed September 24,. 1324:. Serial- No; 739,565.

To all whom; it may concern:

Be it known that I, DANIEL KEMP, a subject of the King of Great Britain: and Ire-- land, residing; at .Hebburn-on-]1yne; in; the county? of Durham, England, have invented: certain; new and useful Improvements in- Means for Lubricating the: Gylinden Liners of: I'nternalrOombustion Engines, of which. the following, is-a specification, reference being bad therein. to the accompanying drawing. l if This invention; relates; to means, for lubris eating: the cylinder. liners: of internal-combustion engines; and has particular rater ence tov lubricating means a of. the kind,. .com monly fitted atthe upper endszof thecylins der liners of engines of; the opposed-piston type, where the lubricatioin pipes; are led through the metal of thewcylinder liner: between: the portsv and communicate with a small lubrication port leading to the innerfacelof. the liner at a particular point of the stroke of the piston. Hitherto it has been customary to provide a number ofpermanently fixed lubrication pipes each having a ball or other valve at the bottom pressed upwards on to its seat by a spring. Usually the water for cooling the cylinder liner encircles the lubrication pipe. In case of failure of the valve or the spring or the choking of the pipe, it is necessary to with draw the cylinder liner to examine the valve and pipe, as the fitting containing the valve and spring is secured at the oil access port in theliner wall in such a manner that the fitting is not accessible otherwise. This is an operation of some magnitude inthe case of large engines. The object of the present invention is to provide an improved construction wherein the necessity for the withdrawal of the cylinder liner to examine the lubrication pipe and valve is obviated.

According to my invention I provide a spring-pressed ball or other valve at the bottom of the lubrication pipe as usual, but I mount said pipe within an enclosing pipe which is secured to the cylinder liner, said lubrication pipe with its valve being capable of being withdrawn endwise from the 0 enclosing pipe without disturbing the latter or the cylinder liner, when it is necessary to examine the pipe or valve.

I will fully describe my invention with reference to the accompanying drawings wherein. Figure 1 is. asectional elevation, Frgure 2 IS; a plansection oni the-line (ll-"17] in Figure Ito a larger scale and FigureB.

is anenlarged view oii the lower end; of the lubrication pipe, of: one construction in accordance. therewith. I y

Referring to the drawings, in the example tl er-ein illustrated, a is the lubrication pipe fitted at the bottom. with. a. ball valve b pressed; upwards on to: its seat bya. spring 0 bearing on a plug 03 screwed into the bottom.

of the pipe a. e isa lateral aperture in the p peopenmg mto an annulus 7 in a box: 9

atthe bottom of a pipe on tubular casing h.

circulates around the enclosing pipe h. At

vthe upper end the bore 79 is closed by a plug A sleeve 1" is screwed into the liner above said plug and bears on packing s thereon to make a tight joint. At its upper end the sleeve 7" is provided with a nut t which compresses packing it against the enclosing pipe h to make a tight joint. Similarly the upper end of the pipe 71. is fitted with a nut 41 which compresses packing w against the lubrication pipe a to make a tight joint. ais a coupling whereby the upper end of the pipe a is connected to the lubricant supply. If desired the coupling in may be in one with the nut o and serve to make a tight joint between the pipes h and a. 0 is a location bracket mounted onlthe liner extension 2 or in other convenient position. lVhen-the end of the location bracket 1 engages the slot m in the couplingm, the aperture 6 at the bottom of the lubrication pipe a is in alignment with the passage j leading to the lubrication port is in the liner m. The 1ocation bracket y also prevents the pipe at being displaced by anypressure on the lower end of the pipe.

The enclosing pipe it will preferably be of stainless steel to avoid corrosion by the cooling water encircling it; the lubrication pipe a may be of solid drawn steel.

It will now be seen that the pipe h closes the lubrication pipe a oil from the cooling water in the bore p in the cylinder liner, and, when necessary, the pipe at with the valve 1) can be readily withdrawn by removing the nut o and without disturbing the enclosing pipe h or the cylinder liner.

I wish'it to be understood that my invention is not limited to thedetails of the construction illustrated in the drawings and that such details may be modified without departing from the spirit of my invention; for example, other means for locating the lubrication pipe in proper position and for sealing the outer ends of the pipes may be adopted. a i

What I claim and desire to secure by Letters Patent is 1. In an internal combustion engine fitted with cylinder liners, means for lubricating said liners comprising a lubrication pipe within the liner, a non-return valve mounted at the bottom of said pipe, bothsaid pipe and cylinder liner being provided with ports adapted to. register, means for maintaining said ports in registry, and a tubularcasing enclosing said lubrication pipeqwithin the liner, said lubrication pipe and its valve being Withdrawable endwise from said tubular casing without disturbing the latter or the liner. V

2. In an internalcombustion engine fitted with cylinder liners, means for lubricating said liners comprising a lubrication pipe within the liner, a non-return valve mounted turbing the latter or the liner.

3. In an internal combustion engine fitted With cylinder liners, means for lubricating said liners comprising a lubrication pipe within the liner, a non-return valve mounted at the bottom of the lubricating pipe, a

tubular casing enclosing said lubricating pipe within the liner,-a box on the bottom of said tubular casing, said liner, said lubrication plpe and said box being provided with ports adapted to register, and means for ma ntaining said ports m registry, said means comprisinga slot in the head of the lubricating pipe and a locating bracket adjacent thereto coacting with said slot, said locating bracket also retainingthe lubricatthe lower end thereof, said lubricating pipe and its valve being withdrawable endwise from said tubular casing without disturbing the latter or the liner. a v

In testimony whereof, I afiix my signature.

DANIEL KEMP.

ing pipe in position against any pressure on 

